Anthony Wallace, part of the Colorado Rapids backline rotation this season, will miss the rest of the Major League Soccer season after knee surgery, the team said Monday.

Wallace underwent surgery to repair damaged caritlage in his right knee, after suffering a knee sprain in a game against the Columbus Crew on Aug. 5. He was rehabbing the knee when the cartilage damage was discovered, the team said.

After the surgery last week in Denver, doctors determined Wallace will be out the next three months, the Rapids said.

He played in 10 games this season, starting in eight. He joined the Rapids last season in a trade with FC Dallas before playing in each of the Rapids' four MLS playoff games, including the MLS Cup victory.

The Rapids — who've lost their past four games and last won on Aug. 17 — play in Commerce City twice this week:

Against Honduras' Real España in a CONCACAF Champions League game on Wednesday; and an MLS game against San Jose on Saturday.

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